Brain is your personal AI OS — it scales you: your judgment, your taste, your craft. You, amplified.
Most AI tools assume you'll wing it — figure out what to automate, which LLM to use, where the memory lives, how to keep your work organised. Brain doesn't. Six composing products give you a Chief of Staff to run your day, a Project Coach to discipline your LLM, and an AI Staff that handles the repeatable work — while you decide what gets built, with the right model matched to each task.
See the products →Each one stands on its own. Together they compose into a Brain that knows what you're working on, what's incoming, what's running, and what your team is doing.
Reach it however you like — CLI, web, desktop app, or Android (beta).
Most "principles" pages are marketing. Ours are engineering commitments — and because you can run Brain yourself, hold your own key, and leave with your data, you don't have to take our word for any of them.
Run it on your laptop with the CLI or the desktop app. Run it on Nerrem Cloud. Move it to a VPS, a Mac Mini, an air-gapped box — Brain goes wherever you point it. There are no required servers, so it's always yours to run.
Everything runs on your own private volume, encrypted at rest and in transit — nothing is ever written or sent in the clear. And the layer that matters most — your notes, your conversations, the thinking behind your work — gets a second lock, with you choosing who holds the key: leave it with Nerrem for password-reset convenience, or hold it yourself with a passphrase that never touches our infrastructure — so not even we can read it.
Your data works for you and only you — we don't train on it, sell it, or analyse your usage; we make money selling software that works, not harvesting what you do with it. And it's always yours to take: pair another device and it's simply there, or export everything in standard formats whenever you want. It's yours to keep — for good.
Start solo and Brain amplifies you. Bring on a team — Team Brain is built for startups and small teams — and the same Brain becomes the foundation you build on: shared goals, decisions, and team-owned projects layered on top, with no migration and no rebuild. Your personal context carries forward, and your Personal Brain is never absorbed. However big your idea gets, you never start over.
Install core-brain
first. Add the products you need, when you need them. Every one
composes with the rest.